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Hajime Obata
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Automated determination of iron in seawater by chelating resin concentration and chemiluminescence detection
H Obata, H Karatani, E Nakayama
Analytical Chemistry 65 (11), 1524-1528, 1993
5071993
The GEOTRACES intermediate data product 2017
R Schlitzer, RF Anderson, EM Dodas, M Lohan, W Geibert, A Tagliabue, ...
Chemical Geology 493, 210-223, 2018
3042018
Sampling and sample-handling protocols for GEOTRACES cruises
G Cutter, P Andersson, L Codispoti, P Croot, R Francois, MC Lohan, ...
Geotraces, 2010
2592010
Developing standards for dissolved iron in seawater
KS Johnson, V Elrod, S Fitzwater, J Plant, E Boyle, B Bergquist, K Bruland, ...
Eos, Transactions American Geophysical Union 88 (11), 131-132, 2007
2482007
Evidence of an extensive spread of hydrothermal dissolved iron in the Indian Ocean
J Nishioka, H Obata, D Tsumune
Earth and Planetary Science Letters 361, 26-33, 2013
1582013
The GEOTRACES intermediate data product 2014
E Mawji, R Schlitzer, EM Dodas, C Abadie, W Abouchami, RF Anderson, ...
Marine Chemistry 177, 1-8, 2015
1442015
Fundamental studies for chemical speciation of iron in seawater with an improved analytical method
H Obata, H Karatani, M Matsui, E Nakayama
Marine Chemistry 56 (1-2), 97-106, 1997
1411997
Colorimetric detection of mercury (II) ion in aqueous solution using silver nanoparticles
ML Firdaus, I Fitriani, S Wyantuti, YW Hartati, R Khaydarov, JA Mcalister, ...
Analytical Sciences 33 (7), 831-837, 2017
1402017
Hydrothermal fluid geochemistry at the Iheya North field in the mid-Okinawa Trough: Implication for origin of methane in subseafloor fluid circulation systems
S Kawagucci, H Chiba, J Ishibashi, T Yamanaka, T Toki, Y Muramatsu, ...
Geochemical Journal 45 (2), 109-124, 2011
1402011
Determination of picomolar levels of iron in seawater using catalytic cathodic stripping voltammetry
H Obata, CMG van den Berg
Analytical Chemistry 73 (11), 2522-2528, 2001
1312001
Determination of trace elements in seawater by fluorinated metal alkoxide glass-immobilized 8-hydroxyquinoline concentration and high-resolution inductively coupled plasma mass …
Y Sohrin, S Iwamoto, S Akiyama, T Fujita, T Kugii, H Obata, E Nakayama, ...
Analytica Chimica Acta 363 (1), 11-19, 1998
1271998
Anthropogenic lead emissions in the ocean: The evolving global experiment
EA Boyle, JM Lee, Y Echegoyen, A Noble, S Moos, G Carrasco, N Zhao, ...
Oceanography 27 (1), 69-75, 2014
1162014
Evidence for the grazing hypothesis: Grazing reduces phytoplankton responses of the HNLC ecosystem to iron enrichment in the western subarctic pacific (SEEDS II)
A Tsuda, S Takeda, H Saito, J Nishioka, I Kudo, Y Nojiri, K Suzuki, ...
Journal of Oceanography 63, 983-994, 2007
1042007
Eastߞwest gradients in the photosynthetic potential of phytoplankton and iron concentration in the subarctic Pacific Ocean during early summer
K Suzuki, H Liu, T Saino, H Obata, M Takano, K Okamura, Y Sohrin, ...
Limnology and Oceanography 47 (6), 1581-1594, 2002
882002
Response of equatorial Pacific phytoplankton to subnanomolar Fe enrichment
S Takeda, H Obata
Marine Chemistry 50 (1-4), 219-227, 1995
881995
Subpolar marginal seas fuel the North Pacific through the intermediate water at the termination of the global ocean circulation
J Nishioka, H Obata, H Ogawa, K Ono, Y Yamashita, K Lee, S Takeda, ...
Proceedings of the National Academy of Sciences 117 (23), 12665-12673, 2020
872020
Geochemical origin of hydrothermal fluid methane in sediment-associated fields and its relevance to the geographical distribution of whole hydrothermal circulation
S Kawagucci, Y Ueno, K Takai, T Toki, M Ito, K Inoue, A Makabe, ...
Chemical Geology 339, 213-225, 2013
842013
The distribution of Fe in the Australian sector of the Southern Ocean
Y Sohrin, S Iwamoto, M Matsui, H Obata, E Nakayama, K Suzuki, ...
Deep Sea Research Part I: Oceanographic Research Papers 47 (1), 55-84, 2000
842000
Hydrothermal impacts on trace element and isotope ocean biogeochemistry
CR German, KA Casciotti, JC Dutay, LE Heimbürger, WJ Jenkins, ...
Philosophical Transactions of the Royal Society A: Mathematical, Physical …, 2016
812016
High-resolution measurement of multiple volatile organic compounds dissolved in seawater using equilibrator inlet–proton transfer reaction-mass spectrometry (EI–PTR-MS)
S Kameyama, H Tanimoto, S Inomata, U Tsunogai, A Ooki, S Takeda, ...
Marine Chemistry 122 (1-4), 59-73, 2010
812010
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